ASTM Committee D18.02 on Sampling and Related Field Testing for Soil Investigation (Mr. Ralph Brown, Chairman) suggested that this proposed suggested method be published herein to provide exposure and solicit comments for users. The purpose is to improve its clarity, accuracy, and acceptibility, so that in the future, Committee D18.02 may submit it for publication in the Annual Book of ASTM Standards. Suggestions for revision and other comments should be sent to Alan J. Lutenegger, Subcommittee D18.02.12. The subcommittee will fully consider all comments and suggestions that provide specific improvements to the proposed method.

Many people living in the Sodwana area of South Africa do not have access to potable water. Groundwater is the best source of fresh water for the rural community. Potable water in the Zululand coastal plain, Sodwana, South Africa can be enhanced by: (i) providing detailed information on the aquifer system using geophysics; (ii) providing information on groundwater quality and its efficient use; (iii) providing low-cost/low technology local drillers with light-weight, manoeuvrable rigs with trained teams for...

Noted petroleum geologist Jack Elam writes about the abilities of Geophysic's patented electrotelluric tool known as the Petro-Sonde. It's ability to give the client the depth, thickness and contents of a pay zone without the need for boreholes first. By far the most advanced surveying tool on the market today the Petro-Sonde has been used in thousands of surveys all across the globe. It is simply unbeatable in it's cost effectiveness versus the information given by it's use.

Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to elevation of the suspected contamination and at 5m intervals at greater depth in the borehole determined the distribution of contaminants and identified...

More than 200 million people worldwide are exposed to excessive fluoride in drinking water. According to the World Health Organization, the optimal concentration range of fluoride in drinking water is 0.5 to 1.5 mg/L. Above this range, populations may contract dental fluorosis or, in severe cases, crippling skeletal fluorosis. In the Gokwe area in NW Zimbabwe, where drinking water contains up to 11 mg/L fluoride, fluorosis prevalence has previously been estimated at 62%. This paper investigates the water quality...

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